Carbon Steel Coil

A387 Pressure Vessel Carbon Steel Coil

A387 Pressure Vessel Carbon Steel Coil DescriptionASTM A387 Boiler Vessels are chromium molybdenum alloy steel coils, suitable for welding boilers and for high temperature pressure vessels. ASTM A387 boiler vessel coils are classified into grade 5, grade 9, grade 11, grade 12, grade 22 and grade 91

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A387 Pressure Vessel Carbon Steel Coil Description

ASTM A387 Boiler Vessels are chromium molybdenum alloy steel coils, suitable for welding boilers and for high temperature pressure vessels. ASTM A387 boiler vessel coils are classified into grade 5, grade 9, grade 11, grade 12, grade 22 and grade 91 according to the alloy elements contained. Except for grades 21L, 22L, 91 and 911, each grade of ASTM A387 boiler vessel coil has two tensile strength categories according to its heat treatment: Class 1 and Class 2.

Product Parameters

Product Name	A387 Pressure Vessel Carbon Steel Coil
Production Process	Hot Rolling, Cold Rolling
Material Standards	AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc.
Width	45mm-2200mm
Length	Custom Size
Thickness	Hot Rolling: 2.75mm-100mm Cold Rolling: 0.2mm-3mm
Delivery Conditions	Rolling, Annealing, Quenching, Tempered or Standard
Surface Process	Ordinary, Wire Drawing, Laminated Film

Chemical Composition

A387	UNS	C	Mn	P	S	Si	Cr	Mo
Level 5	S50200	≤ 0.15	0.25-0.66	0.025	0.025	≤ 0.55	3.90-6.10	0.40-0.70
Level 9	K90941	≤ 0.15	0.25-0.66	0.025	0.025	≤ 1.05	7.90-10.10	0.85-1.15
Level 11	K11789	0.04-0.17	0.35-0.73	0.025	0.025	0.44-0.86	0.94-1.56	0.40-0.70
Level 12	K11757	0.04-0.17	0.35-0.73	0.025	0.025	0.13-0.45	0.74-1.21	0.40-0.65
Level 22	K21590	0.04-0.15	0.25-0.66	0.025	0.025	≤ 0.50	1.88-2.62	0.85-1.15
Class 22L	K21590	≤ 0.12	0.25-0.66	0.025	0.025	≤ 0.50	1.88-2.62	0.85-1.15
Class 91	K90901	0.06-0.15	0.25-0.66	0.025	0.012	0.18-0.56	7.90-9.60	0.80-1.10

Mechanical Properties

A387	Category	Tensile Strength Mpa	Yield Strength Mpa	Elongation Gauge Length 2in.[50mm]%
Level 5	Section Category 1	415-585	205	18
Level 5	Section Category 2	515-690	310	18
Level 9	Section Category 1	415-585	205	18
Level 9	Section Category 2	515-690	310	18
Level 11	Section Category 1	415-585	240	22
Level 11	Section Category 2	485-620	310	22
Level 12	Section Category 1	380-550	230	22
Level 12	Section Category 2	450-585	275	22
Level 22	Section Category 1	415-585	205	18
Level 22	Section Category 2	515-690	310	18

Physical Performance

Physical Performance	Metric	Imperial
Density	7.7-8.03 g/cm3	7.7-8.03 g/cm3

Scope of Application

The molybdenum composition in ASTM A387 boiler vessel plate can improve its tensile strength at high temperature, and make it have higher oxidation and corrosion resistance by increasing the lattice strain. ASTM A387 Boiler Container Plates are ideal for use in heat-resistant pressure vessels and sour gas environments.

Equivalent Material

American Standard ASTM	European Standard ASME	German Standard EN 10028	English standard DIN	Legal standard BS	Russian standard AFNOR 36206
A387 5	SA387 5	X12CrMo5	-	-	-
A387 9	SA387 9	-	-	-	-
A387 11	SA387 11	13CrMoSi5-5	-	621B	-
A387 12	SA387 12	13CrMo4-5	13CrMo44	620B	15CD2.05
A387 22	SA387 22	10/11CrMo9-10	10CrMo9-10	622-515B	12CD9-10
A387 91	SA387 91	10CrMoVNb9-1	-	--	-

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